Thực đơn
Messier_67 Tham khảo|lastauthoramp=
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(trợ giúp)Thực đơn
Messier_67 Tham khảoLiên quan
Messier 87 Messier 77 Messier 62 Messier 74 Messier 7 Messier 66 Messier 73 Messier 72 Messier 68 Messier 37Tài liệu tham khảo
WikiPedia: Messier_67 http://www.univie.ac.at/webda/cgi-bin/ocl_page.cgi... http://astronomynow.com/2016/05/17/stars-nearly-as... http://www.dailygalaxy.com/my_weblog/2014/09/was-o... http://www.deepskyvideos.com/videos/messier/M67.ht... http://adsabs.harvard.edu/abs/2009A&A...503..165Y http://adsabs.harvard.edu/abs/2009ApJ...698.1872S http://adsabs.harvard.edu/abs/2011JAVSO..39..219M http://adsabs.harvard.edu/cgi-bin/bib_query?arXiv:... http://www.aanda.org/articles/aa/pdf/2003/26/aah41... //arxiv.org/abs/1201.0987